Firing device for guns with differential recoils.



E. MULLER. FIRING DEVICE FOR GUNS WITH DIFFERENTIAL REGOILS.

APPLICATION FILED MAY 25, 1911.

Patented May 14, 1912.

\AATIJESSES COLUM 51A NTTE EMIL Mtl'LLER, 0F DUSSELDORF, GERMANY,

ASSIGNOR TO RHEINISGHE METALL- WAAREN- 'UND MASCHINENFABRIK, 0FDUSSEiLDOR-F-DERENDORF, GERMANY, A

CORPORATION OF GERMANY.

FIRING- DEVIOE FOR GUNS WITH DIFFERENTIAL REGOILS.

Specification of Letters Patent.

Patented May it, 1912.

Application filed May 25, 1911. Serial No. 629,403.

To all whom it may concern;

Be it known that I, EMIL Mi'jnnnn, engineer, a subjectof the GermanEmperor, residing at 83 Collenbachstrasse, Dusseldorf, Germany, haveinvented certain new and useful Improvements in Firing Devices for Gunswith Differential Recoils; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

Guns with differential recoil are generally fired by the trigger levercoming into contact wit-h a fixed stop shortly before the end of the runout motion; the trigger lever is consequently operated and the charge isfired. Should a mis-fire occur the energy of the running out movement isnot absorbed by the recoil of the gun after firing but the gun is urgedwith great force by the spring or air accumulators to the end of itspath and may very possibly be forced out of its direction. The triggermust then be released a second or third time by hand until at last thecharge is fired. The whole energy of the recoil must then be absorbed inthe comparatively short recoil stroke ar- "anged for guns withdifferential recoil, since the running out movement is finished andconsequently the force due to the recoil will be twice as great as ifthe charge were fired during the run out. The present invention avoidsthis drawback by an arrangement in which the members which bring aboutthe automatic firing are so constructed that the trigger lever isrepeatedly operated during the course of the run out.

A. constructional form of the invention is represented in theaccompanying drawings in which- Figure 1 is a side view of the gun in ahorizontal position, Fig. 2 is a section across the line 2-2 of Fig. 1,Fig. 3 represents the gun with the barrel in an inclined position. Thefixed piece a, encountered by the trigger lever 29 during the runningout movement is provided according to the invention with several teethor projections which cause the trigger lever Z; to be operated severaltimes in quick succession during the forward movement, so that it ispossible and probable that an effective firing will occur, even if amis-fire has occurred the first time. The trigger lever is so arrangedthat it is drawn back during the forward movement by the teeth of thefixed piece a; while during the recoil it can be displaced by a certainangle in the direction of the arrow shown in Fig. 1, so as to avoid theprojections of the piece a. The arrangement can obviously be altered sothat there are several teeth on the trigger lever and only one on thefixed support.

In the constructional form shown the firing support a is adapted to beautomatically displaced so that as the elevation is increased the coursetraversed before the firing position is reached will be increased, inorder to prevent the longer recoil of the gun, due to its greaterelevation, from running the gun beyond the cradle. For this purpose thefiring support a can slide in guides c in the cradle and is linkedthrough a connecting rod (Z with a point e of the carriage situatedabove the trunnions. By this de vice the firing support a is drawnfart-her forward on the cradle as the gun is elevated, so that thedistance the gun is run out before it reached the firing position isautomatically increased.

I claim as my invention:

1. A firing device for differential recoil guns comprising, incombination with a barrel, a trigger lever, and means cooperating wit-hthe trigger lever for repeatedly operating it during the run out of thebarrel.

2. A firing device for differential recoil guns comprising, incombination with a barrel, a trigger lever, and a series of teeth foroperating the trigger lever during the run out of the barrel.

3. A. firing device for differential recoil guns comprising, incombination with a barrel, a trigger lever, and a plate for cooperat ingwith said trigger lever and having means for operating itseveral timesduring the run out movement of the barrel, and means for automaticallydisplacing said plate relatively to the barrel according to theelevation of the latter.

l. In combination with abarrel, the cradle therefor, and means pivotallysupporting the cradle, of a trigger lever carried by the barrel, a plateslidably mounted on the cradle and having a series of teeth with whichthe trigger lever is designed to engage 0n the run out of the barrel,and a link pivotally connecting said plate and the cradle support atapoint above the pivot of the craclle In testimony whereof, I have signedthis l for automatically changing the position of WV1tnesses:

specification in the presence of two subscribing Witnesses.

EMIL MULLER. [1,. 5.]

the plate when the barrel and cradle are ele- ALBERT F; KEEFER, vated.HEDWIG HEI lNIGKEN.

Copies of ms patent may be obtained forfive cents each, byaddressing theCommissioner of'fPatents, Washington, D. 0.

